American Mineralogist
REGULAR ARTICLE
355 Mineral equilibria in an interdisciplinary perspective Presidential Address
366 Carrboydite, a hydrated sulfate of nickel and aluminum: a new mineral from Western Australia
373 Native metal in diogenite meteorites
379 Morphology and composition of allophane
391 The effect of pressure on the degree of covalency of the cation-oxygen bond in minerals
398 Spectroscopic and magnetic studies of ferric iron hydroxy sulfates: the series Fe(OH)SO4·nH2O and the jarosites
405 Sanidine from the Mesa Falls Tuff, Ashton, Idaho
409 Equilibria and origin of minerals in the system Al2O3-AlPO4-H2O
414 Refinement of the crystal structure of celsian
419 The crystallization of anatase and rutile from amorphous titanium dioxide under hydrothermal conditions
425 Oxide minerals in miarolitic rhyolite, Black Range, New Mexico
431 Margarite pseudomorphs after chiastolite in the Rangeley area, Maine
435 High-temperature structural study of the P21/a.<>A2/a phase transition in synthetic titanite, CaTiSiO5
448 Crystal structure and crystal growth: I. The Influence of internal structure on morphology
460 Crystal structure and crystal growth: II. Sector zoning in minerals
470 Stacking disorder and polytypism in zussmanite
484 The Lorentz factor for basal reflections from micaceous minerals in oriented powder aggregates
495 A low-temperature synthesis of a harmotome-type zeolite
497 Amesite from Antarctica
500 Primary nontronite from the Venezuelan Guayana: additional primary occurrences (Red Sea, Lake Malawi)
AWARD
508 Presentation of the Roebling Medal of the Mineralogical Society of America for 1975 to Michael Fleischer
NEW MINERAL NAMES
502 NEW MINERAL NAMES
MINERALOGICAL NOTES
492 MINERALOGICAL NOTES The clay component of the Columbia River palagonites
NOTES
507 NOTICES
BOOK REVIEW
505 BOOK REVIEWS
PROCEEDINGS
537 Proceedings of the Fifty-sixth Annual Meeting of the Mineralogical Society of America in Salt Lake City, Utah
547 LIST OF OFFICERS AND COMMITTEES
MEMORIAL
519 MEMORIALS Memorial of George Baker
522 Memorial of Walter Frederick Hunt
528 Memorial of Davis M. Lapham
530 Memorial of Robert L. Parker
532 Memorial of Lewis Stephen Ramsdell
534 Memorial of Clarence S. Ross
TABLE OF CONTENTS
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SPECIAL COLLECTIONS
Table of Contents
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American Mineralogist is an international journal that publishes mineralogical papers of broad interest to the geoscience and materials science community.